Based on James Farr's AWESOME Trains-formers animations (which, at the time of this post, appear to have been taken off of YouTube due to a hopefully bullsh*t copywrite claim by HIT entertainment), here's my LEGO model of Opthomas Supreme!

Here he is in his most basic form:

Epic shot!!!1!!one!

Tried to get a closeup of the head. The face is just a sticker on 2 transparent yellow parts.

Showing off some detail (I actually had to simplify the smokestacks so I could put the flames in, but it was worth it! )

Chest and stomach (notice the fireplace in the stomach):

I even managed to fit the lamp thing on the 'wings',

Arm shot. The yellow is supposed to represent the yellow numbers on his arms (from the train modes).

Leg wheels (wasn't sure if I had enough large disks to pull this off )

Action poses!

Here he is next to his components.

If you saw Trains-formers 2oot, you'd know that Opthomas Supreme sometimes needs to gain an aerial advantage, and calls on Harold the Helicopter to become a flight pack!

It simply pegs onto his back.

Back view.

But when things get REALLY tough, he calls on a new, Japanese engine named Hiro to change into SAMURAI ARMOR!!!!

The samurai parts clip and slide on nicely, and doesn't require removal of any of Opthomas' parts

Here's a better look at his 'boots'.

He can still combine with Harold, even while wearing the armor..

Size comparison with leader Cybertron Megatron, an Energon combiner, RiD Cliffjumper, DOTM Sideswipe, a blindbag pony and a LEGO minifigure. As you can see, he stands at about Leader scale.